> The reason to preserve and re-publish something that was once known, is so that no single party gets to use it, or use it's absense, against everyone else. I

> The reason to preserve and re-publish something that was once known, is so that no single party gets to use it, or use it's absense, against everyone else. I don't understand this argument. If, say, my credit card information is published, it can only be used to harm me. Removing it causes no harm to anyone else, so leaving it published _only_ causes more harm.